ORO2U Dirt Catalogue - Section E - Engine and Performance.

ProX

Piston Kits

ProX Piston Kits ProX pistons are precision machined on the latest, state of the art CNC equipment. The same low-expansion, low-friction piston alloy is used as is used for all major Japanese engine manufacturers. ProX piston kits are a first class solution to replace the original piston in your motorcycle. ProX piston kits for sleeved cylinders are available in standard size and a wide range of over sizes. ProX pistons for plated cylinders come in standard size, A, B, C, D & over sizes. All ProX piston kits are supplied complete with piston rings, wrist pin and circlips, ready to install!

FANTIC 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

XE 125 XE 125 XX 125 XX 125 XX 250

2021 - 22 54mm 2022 - 26 54mm

.A.PX .A.PX .A.PX .A.PX .A.PX

.PX .PX .PX .PX .PX

.PR .PR .PR .PR

.PX .PX .PX .PX .PX

.PROX .PROX .PROX .PROX

56-W845 56-W899 56-W845 56-W899 56-W742

56-R1266 56-R1266 56-R1266 56-R1266 56-R1259

56-0715 56-0715 56-0715 56-0715 56-0729

56-0174 56-0174 56-0174 56-0174 56-0181

56-814 56-814 56-814 56-814

2021

54mm

2022 - 26 54mm 2022 - 23 66.4mm

.PR

.PX

56-8010

FANTIC 4-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

XEF 250 XXF 250 XEF 450 XXF 450

2021 - 25 77mm 2022 - 26 77mm 2022 - 25 97mm

.A.PX .A.PX A.PX A.PX

.PX 56-6500.PR .PX 56-6500.PR

.PX .PX .PX .PX

– – – –

56-W8812 56-W8812 56-W4787 56-W4787

56-R1245 56-R1245 56-R1267 56-R1267

56-0176 56-0176 56-0181 56-0181

PX PX

– –

2022

97mm

GASGAS 2-Stroke Models

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

2021 - 26 39.5mm 2021 - 26 45mm 2021 - 26 47mm 2021 - 25 54mm

MC 50 MC 65 MC 85 MC 125 MC 150

.A.PX .A.PX .A.PX .A.PX

.PX .PX

.PX .PX .PX .PX .PX .PX .PX .PX .PX .PX

.PROX PROX

56-W802 56-W313 56-W012 56-W035

56-R1246 56-R1248 56-R1227 56-R1223 56-R1277 56-R1207 56-R1200 56-R1200 56-R1201 56-R1201

56-0166 56-0166 56-0170 56-0174 56-0174 56-0181 56-0181 56-0181 56-0181 56-0181

56-6513 56-6307

PX

.PROX .PROX .PROX .PROX

56-821 56-800 56-800 56-802

.PX

.PX

56-783

2025

58mm

.A.PX

PX PX

56-W6720

MC/EC/XC 250

1997 - 19 66.4mm 2021 - 24 66.4mm 2022 - 25 66.4mm 2000 - 19 72mm 2021 - 24 72mm

A.PROX .A.PROX .A.PROX

.PR

56-W157 56-W214 56-W214 56-W159

56-781

EC 250

.PX .PX .PX .PX

.PROX .PROX

.PROX .PROX

56-7924 56-7924

56-8020 56-8020

EX/MC 250 EC/XC 300 EC/EX 300

.A.PX

.PR

.PROX

56-781

56-802

.A.PX

.PROX

56-W9984

56-8020

GASGAS 4-Stroke Models EC 250F (Std. Comp. 12.5:1) EC 250F (Std. Comp. 13.8:1) EC 250F (Std. Comp. 14.5:1) EX 250F (Std. Comp. 14.4:1) EX 250F (Std. Comp. 14.5:1) MC 250F (Std. Comp. 14.4:1) MC 250F (Std. Comp. 14.5:1) EC 350F (Std. Comp. 13.5:1) EX 350F (Std. Comp. 14.2:1)

Years

Size

Piston Kit

Piston Rings

Piston Pin

Piston Clips

Small End Bearing

2010 - 15 77mm 2021 - 23 78mm 2024 - 25 81mm 2021 - 23 78mm 2024 - 25 81mm 2021 - 23 78mm 2024 - 25 81mm 2021 - 24 88mm 2021 - 24 88mm 2023 - 25 88mm 2013 - 15 95mm 2013 - 15 95mm 2021 - 23 95mm

.A.PX .A.PX

.PX

.PR

.PX .PX

– – – – – – – – – – – – – – – – –

56-W188 56-W954

56-R1208 56-R1225

56-0718

56-0175 56-0176

.PX 56-6500.PROX

.A.PX

56-W4984 56-W265 56-W4984 56-W265 56-W4984 56-W4735 56-W4735 56-W4735

.A.PX

.PX 56-6500.PROX

.PX

56-R1278

56-0176

.A.PX

.A.PX

.PX 56-6500.PROX

.PX

56-R1278

56-0176

.A.PX

_00A.PX _00A.PX _00A.PX

.PX .PX .PX

.PROX .PROX .PROX

.PX .PX .PX .PX .PX .PX

56-R1202 56-R1202 56-R1202 56-R1209 56-R1209 56-R1203

56-0725 56-0725 56-0725

56-0181 56-0181 56-0181 56-0182 56-0182 56-0185

MC 350F

EC 450F (Std. Comp. 12.5:1)

.A.PX .B.PX .A.PX

.PX 56-0726.PR .PX 56-0726.PR

56-W222 56-W223 56-W956

(High Comp. 13.0:1)

EX 450F (Std. Comp. 12.75:1) EX 450F (Std. Comp. 13.1:1) MC 450F (Std. Comp. 12.75:1) MC 450F (Std. Comp. 13.1:1)

.PX

.PROX

56-7959

2024

95mm

.A.PX

56-W4985 56-W956 56-W4985 56-W8816

2021 - 23 95mm 2024 - 26 95mm

.A.PX

.PX

.PROX

.PX

56-R1203

56-7959

56-0185

.A.PX .A.PX

EC 500F

2024

95mm

.PX

.PROX

.PX

56-R1203

56-7959

56-0185

*Please visit our website for current prices

E-mail: sales@oro2u.com

www.oro2u.com

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